For RV builders and owners who want a listed 2000 W inverter-charger with a fast charger and RV-C integration. It costs more than the plain Freedom XC 2000.
Amazon $1,216.32
For full-time RVers who want a rugged low-frequency inverter-charger that will start air conditioners and charge fast from a generator.
- 2,800 WContinuous
- 3,900 WSurge
- 2.5 AIdle draw
- YesUL listed
- 3 yearsWarranty
No store we check sells it online; the maker lists where to buy or who installs it.
- Low-frequency transformer handles big motor starts for minutes, not milliseconds
- Fast 125 A PFC charger is easy on generators
- ETL listed to UL 458; built for RV and fire-truck duty
- Made in the USA
- Heavy at 55 lb
- Draws about 2.5 A idle outside search mode
- Remote needed for lithium presets and most settings
The Magnum MS family
Every Magnum MS model we rank, smallest first. Ratings compare each against its own size.
| Model | Continuous | Rating | Price |
|---|---|---|---|
| Magnum Energy MS2012 | 2,000 W | 3.1/5 | $2,110.43 |
| Magnum Energy MS2812 (this one) | 2,800 W | 3.5/5 | - |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | MS2812 |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| Continuous power | 2,800 W |
| Surge power | 3,900 W for 5 s |
| DC input range | 9 to 16.8 V |
| Idle draw | 2.5 A (30 W) |
| Power-saving draw | 0.7 A |
| Peak efficiency | 90% |
| Connections | |
| AC outlets | 0 |
| GFCI outlets | No |
| Hardwire terminal | Yes |
| USB ports | None |
| Transfer switch | Yes |
| Charger | 125 A |
| Lithium charge profile | Yes |
| Parallel units | No |
| Control and build | |
| Remote | Optional extra |
| App | Optional add-on |
| Display | No |
| Safety listing | ETL listed to UL/cUL 458, CSA C22.2 No. 107.1-01; meets KKK-A-1822E |
| Cooling | fan |
| Dimensions | 13.75 x 12.65 x 8.0 in (34.9 x 32.1 x 20.3 cm) |
| Weight | 55 lb |
| Warranty | 3 years |
Alternatives in this size
An all-in-one RV or boat inverter-charger that recharges a lithium bank quickly on shore power. Plan on buying the remote.
Rich Solar $649.99A small inverter-charger for a teardrop, small boat or van that plugs into shore power. It replaces a separate inverter, charger and transfer switch.
Amazon DRSA $308.55Compare
Compare the Magnum Energy MS2812 with any other 12V inverter →
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